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SR 25 - Columbia River Bridge

Update June 15, 2017

Repair work starts on Saturday, June 17. Drivers should be alert for alternating, single-lane traffic controlled by a temporary signal or flaggers. Expect delays. Full bridge closures are scheduled for Tuesday, Wednesday, and Thursday evenings, June 20, 21, and 22, beginning at 7 p.m. until as late as 5:30 a.m. the following morning.  work should be completed in mid-July.

Update: June 8, 2017

Repairs on the State Route 25, Columbia River Bridge starts later this week. Contractor crews from Northbank civil and Marine of Vancouver, WA will begin on Thursday, June 15.

The bridge will remain open while work is underway with the existing temporary signal already in operation controlling the one way, alternating traffic with weight and width restrictions remaining in place.  The job will require several evening and overnight full closures from 7 p.m. until 5 a.m.  The first series of closures will be on June 20, 21, and 22.

The contractor will rehabilitate the bridge tension anchors and modify the expansion joint diverter assemblies.  Engineers found extensive corrosion in these components during inspections forcing the WSDOT to implement weight restrictions and add concrete counterweights to reduce the load on the anchors in early January, 2017.

 Repairs are planned to take about 30 days to complete.  The contractor will work seven days a week until the job is done.


Update: May 18, 2017

Repair project contract awarded to Northbank Civil and Marine of Vancouver, WA.  Exact work schedule is not yet determined.


Update: May 8, 2017

The repair project is being advertised for contractor bids.  Bid opening planned for May 10.


Update: April 3, 2017

WSDOT Bridge Engineers continue to develop repair plans.  Traffic signals will remain in place until repairs are complete.


Update: Jan. 26, 2017

WSDOT Bridge Division engineers in Olympia continue to work on designs for the bridge repair.  Repair work will require warm weather so is likely to begin in May or June.  since design is still underway, the construction timeframe or exact traffic configurations are not yet known.


Update: Jan.6, 2017

On Sunday, Jan. 8, 2017.  WSDOT crews installed a temporary traffic signal system on the SR 25/Columbia River Bridge at Northport in Stevens County (MP 114), about 5 miles south of the Canadian border.  The signal will allow single-lane, alternating traffic, through a 2,500 foot section of SR 25.  Drivers should expect short delays.

Now that the signal system is in operation, traffic is controlled without the need for staffed flagging crews.  

With signalized control, and the revised counter balance, the earlier “one truck at a time” restriction has been lifted.  However, the bridge will remain restricted to legal loads only.  No overweight or oversize loads will be allowed until further notice. 


Bridge Restrictions and Repairs-January 2017

Bridge inspections by Washington State Department of Transportation bridge engineers revealed extensive corrosion on the State Route 25 bridge that crosses the Columbia River at Northport.

As a precaution, crews will reduce SR 25 to a single lane, with alternating traffic controlled by a temporary traffic signal. This restriction will remain in place 24 hours a day, seven days a week. 

An in-depth review and assessment in December indicated that heavy rust has penetrated large bolts that provide the connection of the steel trusses to the piers at the north and south ends of the span and weight restrictions would be needed.

Next steps

Bridge engineers at WSDOT headquarters in Olympia have designed a temporary counter balance to reduce the stress on the bolts while plans and specifications for permanent repairs can be formulated. It may take up to six months for the repairs to be completed. No cost estimates are available at this time.

The 1,500 foot-long, steel-truss bridge was constructed in 1948. Located just 5 miles south of the US/Canada border, about 500-800 vehicles use the bridge every day with trucks comprising around 40 percent of that total.

SR 25 Columbia river Bridge at Northport
SR 25 Columbia river Bridge at Northport (Looking downstream. North is on the right.)

Project Locator Map
This project is located in Stevens County, north of Colville, about 5 miles south of the Canadian border.